The safest PC seats in Ontario, based on their 2007 margin of victory:

Haldimand—Norfolk +38.7%
Renfrew—Nipissing—Pebroke +37.6%
Leeds-Grenville +27.5%
Simcoe—Grey +24.6%
Niagara West—Glanbrook +21.0%
Parry Sound—Muskoka +20.5%
Haliburton—Kawartha Lakes—Brock +20.5%